simple_recorder.py

simple_recorder.py

import sound,ui
from sound import Recorder
from sound import Player
sound.set_volume(1)
filename='4.m4a' #could have this come from a textfield in the ui...

play_image=ui.Image('iob:play_256')
stop_image=ui.Image('iob:stop_256')
record_image=ui.Image('iob:ios7_circle_filled_256')

class RecorderView(ui.View):
   def __init__(self, *args,**kwargs):
      super().__init__(*args, **kwargs)
      
      '''create two buttons, and assign actions.  if using ui designer, you would use load_view instead'''
      self.recordButton=ui.Button(frame=(0,0,100,100),image=record_image, tint_color='#ff3333')
      self.recordButton.action=self.record
      self.recordButton.width=100
   
      self.playButton=ui.Button(frame=(150,0,100,100),image=play_image, tint_color='#3345ff')
      self.playButton.width=100
      self.playButton.action=self.play
      self.playButton.enabled=False # nothing to play yet
      
      self.statuslabel=ui.Label(frame=(0,225,400,40))
      self.statuslabel.text='Nothing recorded...'
      self.add_subview(self.recordButton)
      self.add_subview(self.playButton)
      self.add_subview(self.statuslabel)
      

      self.recorder=None
      self.player=None
      
   def record(self,sender):
      '''record action. if recorder is refording, we stop.  otherwise, we start recording'''
      if self.recorder and self.recorder.recording:
         self.recorder.stop()
         sender.image=record_image
         self.recorder=None
         self.playButton.enabled=True
         '''we can create the player now, just dont play it yet.  this is slightly more efficient if pressing play multiple times.  also, create the finish handler, to reset everything once the player is done playing'''
         self.player=Player(filename)
         self.player.finished_handler=self.play_finished
         self.update_interval=0.0 #stop updates
         self.statuslabel.text='Current recording: {:0.2f} seconds'.format(self.player.duration)
      else: 
         sender.image=stop_image 
         self.recorder = Recorder(filename)
         self.playButton.enabled=False #so you can't press play while recording...
         self.recorder.record()
         self.update_interval=0.1 #start updates
         
   def play_finished(self):
      '''resets play button, when player is done, or stop pressed'''
      self.player.stop()
      self.playButton.image=play_image
      self.recordButton.enabled=True
      self.update_interval=0 #stop updates
      self.statuslabel.text='Current recording: {:0.2f} seconds'.format(self.player.duration)
   def play(self,sender):
      '''button handler for play/play stop button.     
      if player is playing, then we stop the player.  otherwise, play'''
      
      if self.player and self.player.playing: 
         self.play_finished()
      else:
         ''' play: set the image to stop, and disable recorder button, then fire the player'''
         sender.image=stop_image
         self.recordButton.enabled=False
         self.player.play()
         self.update_interval=0.1 #start updates
         
   def update(self):
      ''' show current recording / play time
      Exercise for reader: add a graphic display of recorder.meters, by implementing a draw method.
      '''
      if self.player and self.player.playing:
         self.statuslabel.text='Playing: {:0.2f} of {:0.2f} sec'.format(self.player.current_time, self.player.duration)
      elif self.recorder and self.recorder.recording:
         self.statuslabel.text='Recording: {:0.2f} sec'.format(self.recorder.current_time)
      elif self.player and not self.player.playing:
         self.statuslabel.text='Current recording: {:0.2f} seconds'.format(self.player.duration)
      else:
         self.statuslabel.text='I should not be here...'
         
v=RecorderView(frame=(0,0,400,400), bg_color='white')
v.present('sheet')